Breaktrough

Clad in a terrifying aura of condensed Sword Intent, Bai Yu transformed into a weapon himself. He surged forward, a blur of power and purpose, meeting the lightning dragon head-on. With a flick of his wrist, five streaks of razor-sharp sword qi erupted from his fingertips, each one a miniature storm of concentrated energy. They slammed into the dragon's electrified form in a deafening explosion that sent shockwaves rippling across the entire island. The very ground trembled beneath their feet.

Undeterred, the lightning dragon, its form flickering but far from vanquished, continued its descent towards Bai Yu. With a defiant roar, he channeled every ounce of his remaining energy. His hand blurred, condensing into a blade of pure Sword Intent.

"I walk the path of a King," he bellowed, his voice echoing through the storm, "and no force, not even the heavens themselves, can hold me back!"This declaration, infused with his unwavering determination, fueled the blade in his hand.

With a thunderous cry, he unleashed his attack. The condensed sword qi cleaved through the air at an unimaginable speed, a blinding flash that seemed to split the very sky itself. It struck the lightning dragon with devastating force, cleaving the magnificent beast in two in a single, awe-inspiring blow.

The scattered lightning, once a destructive force, was now drawn towards Bai Yu. It coursed through his body, not as a weapon of tribulation, but as a cleansing and invigorating current. It purged impurities, strengthened his muscles and bones, and reforged his very being. The transformation was agonizing yet exhilarating.

As the final tendrils of lightning dissipated, the black clouds above parted, revealing a clear blue sky bathed in warm sunlight. A powerful aura erupted from Bai Yu, a wave of energy that radiated outwards for miles. It was a hundred times more potent than anything he'd ever exuded before – the undeniable presence of a Law Domain Master.

Standing amidst the scorched landscape, the peak of the mountain now a smoldering crater testament to the ferocious battle, Bai Yu raised his face to the heavens. A satisfied smile touched his lips. "So, this is the Law Domain Master Realm," he murmured, his voice tinged with awe and a hint of newfound power.